
TE
CH
tm
MCU
Reduced I/O 8-bit MCU
FEATURES
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Compatible with MCS-51 Products
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128 x8 bit RAM
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Embedded 8k X 8 bit data OTP ROM
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13 bi-direction I/O Lines.
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System clock: Typ. 12MHz @ 2.5 ~ 5.5V.
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2 External Interrupt Input
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Programmable Serial UART Channel.
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Watch Dog Timer
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One 16-bit Timer/Counter (T0) & Two 16-bit Timer (T1, T2)
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On-chip selectable crystal driving PAD or RC oscillator.
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Low Power and wake-able power down mode
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One Buzzer Driving Pad.P1.0 (driving capability up to 40mA).
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SOP18/DIP18 Package.
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Typical 3.3V Operating Voltage.
Description
The T81L0003A is a low voltage and low cost and reduced I/O 8-bit high performance 8051-like
MCU. The T81L0003A provides 13 bi-direction I/Os for end user programming with other device and
3 timers (but only one counter) for more applications and low cost.
Part Number Example
Part No.
Pkg.
Description
T81L0003A-AK
DIP 18 pin
RC oscillation
T81L0003A-AD
SOP 18 pin
RC oscillation
T81L0003A-BK
DIP 18 pin
Crystal oscillation
T81L0003A-BD
SOP 18 pin
Crystal oscillation
T81L0003A
TM Technology, Inc. reserves the right
P. 1
to change products or specifications without notice. Revision: C
Publication Date: SEP. 2004